Just looked it up for Germany: over residential areas you need either “an explicit permission of the owner”, or “it is very light (<250g) and has no ability to record video, audio or radio” or “it is more then 100m above ground, not in the night and some other fingerprint” [1].
In all EU you actually need a registration on your some clearly visible [2].
So, of they are below 100m or in the night, just call the authorities. If you live a bit outside it might just not clear from above that it’s private property.
Just looked it up for Germany: over residential areas you need either “an explicit permission of the owner”, or “it is very light (<250g) and has no ability to record video, audio or radio” or “it is more then 100m above ground, not in the night and some other fingerprint” [1].
In all EU you actually need a registration on your some clearly visible [2].
So, of they are below 100m or in the night, just call the authorities. If you live a bit outside it might just not clear from above that it’s private property.
[1] https://dipul.de/homepage/en/information/geographical-zones/legal-basis/#accordion-1-6 [2] https://www.easa.europa.eu/en/light/topics/travelling-drones